Electro-active Shape Memory Properties of Poly(ε-caprolactone)/Functionalized Multiwalled Carbon Nanotube Nanocomposite
Abstract
One type of electroactive shape memory nanocomposite was fabricated, including cross-linked poly(ε-caprolactone) (cPCL) and conductive multiwalled carbon nanotubes (MWNTs). The cross-linking reaction of the pristine poly(ε-caprolactone) (PCL) was realized by using benzoyl peroxide (BPO) as an initiator. The raw MWNTs (Raw-M) were prefunctionalized by acid-oxidation process and covalent grafting with poly (ethylene glycol) (PEG), respectively. Three kinds of nanocomposites containing cPCL/Raw-M, cPCL/acid-oxidation MWNTs (AO-M) and cPCL/PEG grafted MWNTs (PEG-M) were obtained, and the mechanical, electrical and shape memory properties were further investigated. The influence of in vitro degradation on their shape memory and mechanical properties was also evaluated. The methyl thiazolyl tetrazolium (MTT) assay was performed to estimate their biocompatibility. The results displayed that these nanocomposites could perform favorable shape memory recovery both in hot water at 55 °C and in electric field with 50 V applied voltage. In addition, compared with cPCL/Raw-M and cPCL/AO-M, cPCL/PEG-M composite possessed more favorable properties such as mechanical, biocompatible, and electroactive shape memory functions. Therefore, the nanocomposite may be potential for application as smart bioactuators in biomedical field.
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If MWCNTs were pre-functionalized by acid-oxidation process and covalent grafting with poly(ethylene glycol), the prepared CNT/poly(ε-caprolactone) composite had good biocompatibility.
“It was found that if the MWCNTs were pre-functionalized by acid-oxidation process and covalent grafting with poly(ethylene glycol), the prepared CNT/poly(ε-caprolactone) composite had good biocompatibility.”
From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as Xiao et al. [563]
If MWCNTs are pre-functionalized by acid-oxidation and covalent grafting with poly(ethylene glycol), the prepared CNT/poly(ε-caprolactone) composite has good biocompatibility.
“It was found that if the MWCNTs were pre-functionalized by acid-oxidation process and covalent grafting with poly(ethylene glycol), the prepared CNT/poly(ε-caprolactone) composite had good biocompatibility.”
From A review of stimuli-responsive shape memory polymer composites (2013) · cites this paper as [563]
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- Authors
- Xiao, Y., Zhou, S., Wang, L., & Gong, T.
- Affiliations
- Southwest Jiaotong University (CN)
- Corresponding author
- Zhou, Shaobing
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-11-19
- Volume
- 2
- Issue
- 12
- Pages
- 3506-3514
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2316115054
- Cited by
- 153
- References
- 58
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 4 · 2023: 7 · 2022: 9 · 2021: 8 · 2020: 11 · 2019: 20 · 2018: 15 · 2017: 11 · 2016: 18 · 2015: 7 · 2014: 9 · 2013: 15 · 2012: 12
- FWCI
- 5.29
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Dielectric materials and actuators
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
- Keywords
- polycaprolactone, multi-walled carbon nanotubes, shape memory polymers, electroactive materials, poly(ethylene glycol) grafting, benzoyl peroxide, in vitro degradation, biocompatibility, mechanical properties, electrical conductivity
- MeSH terms
- Electromagnetic Fields, Materials Testing, Molecular Conformation, Particle Size, Polyesters, Surface Properties, Nanotubes, Carbon, Macromolecular Substances
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